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w d valleau
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Cilt sonuçları
Burning and non-burning strains of tobacco mosaic ; The ring symptom of virus diseases of plants ; Mosaic from tobacco one to fifty-two years old
W. D. Valleau · Kentucky Agricultural Experiment Station, University of Kentucky
271 sayfa · 1935
Tobacco / Diseases and pests / Tobacco mosaic disease
Do tobacco plants recover from, and develop immunity to ringspot
W. D. Valleau · Kentucky Agricultural Experiment Station, University of Kentucky
230 sayfa · 1935
Tobacco / Diseases and pests / Tobacco mosaic disease
Tobacco diseases
W. D. Valleau · Kentucky Agricultural Experiment Station, University of Kentucky
62 sayfa · 1936
Tobacco / Diseases and pests
Root-rot of tobacco in Kentucky and its control
W. D. Valleau, Ralph Kenney, E. J. Kinney · Kentucky Agricultural Experiment Station, University of Kentucky
180 sayfa · 1925
Tobacco / Diseases and pests / Tobacco root rot